chapter 20: circuits - PowerPoint PPT Presentation

Chapter 20: Circuits. Current and EMF Ohm’s Law and Resistance Electrical Power Alternating Current Series and Parallel Connection Kirchoff’s Rules and Circuit Analysis Internal Resistance Capacitors in Circuits. Current and EMF. A few definitions:

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A real battery can be modeled as ideal one, connected in series with a small resistor (representing the internal resistance of the battery). The voltage drop with increased current is due to Ohm’s Law in the internal resistance.